PS4: Survival Mode: Save Disappeared.

[MoxyDon]

I purchased TLD on PS4 on the 12th Aug 2017. I haven't played the story mode as yet, I went straight into survival mode. up until now I have had no issues, it only crashed once, but that's it. However, yesterday I continued playing survival mode and progressed to 30+ days, played for a couple of hours, saved it as usual, then turned it off. A few hours later I went back to play it, but instead of the screen displaying the option to resume, it only had the option to start a new game. So, on checking the system storage of my PS4, I discovered that the save file was intact, it was only absent from the game itself. I put in hours of game play and have lost it all, but what is more frustrating, is that the save file is still in my PS4 storage that i cant access. please help.